| I would agree with you: the huge capacity of the human brain (compared to other organisms) is what differentiates us anatomically. You'll see that brain capacity steadily increased from Austrolopithicus to the Cromagnon all the way up to modern-day man.
Intellectually, it's been said that the differentiating characteristic in humans is the ability to choose. I guess I'd agree with that as well since sub-human animals act purely upon instinct, right?. |